I believe the answer is D. Here is a really good link to help you figure out the concept.
http://www.takadimi.net/documents/Takadimi%20short%20guide%20for%20Web.pdf
Hope this helps!
Answer:
3 Similarities and Differences between Greek and Roman Architecture The most obvious similarity between Greek and Roman architecture is the use of the Doric, Ionic and Corinthian orders. Though the Greeks developed the Corinthian order, the Romans seemed to have favored it more and constructed more buildings using that order than the Greeks did.
Explanation: